Clean Air Partners (CAP) offers the only catalytic particulate filter for natural gas engines approved by the California Air Resources Board (CARB). This filter reduces CAP's Dual-Fuel engine particulate matter emissions to 0.006 grams per brake horsepower-hour — 40% below the EPA's emission standards for 2007.
CAP Dual-Fuel engines do not require ultra-low sulfur diesel. The CAP catalytic particulate filter also reduces emissions of aldehydes, non-methane hydrocarbons, and carbon monoxide.